Morphology of cobalt ferrite nanoparticle–polyelectrolyte multilayered nanocomposites

• Published in: Journal of magnetism and magnetic materials Vol. 323; no. 10; pp. 1372 - 1377
• Main Authors: Alcantara, G.B., Paterno, L.G., Fonseca, F.J., Morais, P.C., Soler, M.A.G.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01-05-2011; Elsevier
• Subjects: Applied sciences; CoFe 2O 4 nanoparticle; Composites; Electrostatics; Exact sciences and technology; Forms of application and semi-finished materials; Layer-by-layer assembly; Magnetic nanocomposite film; Morphology; Nanocomposites; Nanoparticles; Nanostructure; PEDOT:PSS; Polyelectrolytes; Polymer industry, paints, wood; Polystyrene resins; Tapping; Technology of polymers; CoFe 2O 4 nanoparticle; Magnetic nanocomposite film; Layer-by-layer assembly; Morphology; PEDOT:PSS; Atomic force microscopy; Polymer electrolytes; Nanoparticle; Electrostatic interaction; Multiple layer; CoFe; O; Layer by layer growth; Cobalt Iron Oxides Mixed; Magnetic material; Thiophene derivative polymer; Styrenesulfonic acid polymer; Ultraviolet visible spectrum; Nanocomposite; Microstructure
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2010.11.049

Novel magnetic nanocomposite films with controlled morphology were produced via the electrostatic layer-by-layer assembly of cationic CoFe
2O
4 nanoparticles and anionic poly(3,4-ethylenedioxy thiophene)/poly(styrene sulfonic acid) (PEDOT:PSS) complex. The electrostatic interaction between nanoparticle and the polyelectrolyte complex ensured a stepwise growth of the nanocomposite film with virtually identical amounts of materials being adsorbed at each deposition cycle as observed by UV–vis spectroscopy. AFM images acquired under the tapping mode revealed a globular morphology with dense and continuous layers of nanoparticles with voids being filled with polymeric material.
► Novel magnetic nanocomposite films with controlled morphology assembled by layer-by-layer. ► Electrostatic interaction of cationic CoFe
2O
4 nanoparticles and anionic (PEDOT:PSS). ► Globular morphology of dense layers of nanoparticles with voids being filled with polymeric material.